B meson production in Pb+Pb at 5.02 ATeV at LHC: Estimating the diffusion coefficient in the infinite mass limit
In the last decade a Quasi-Particle Model (QPM) has been developed to study charm quark dynamics in ultra-relativistic heavy-ion collisions supplying a satisfactory description of the main observables for D meson and providing an estimate of the space-diffusion coefficient Ds(T) from the phenomenolo...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-02-01
|
| Series: | Physics Letters B |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269324000388 |
| _version_ | 1797324383452135424 |
|---|---|
| author | Maria Lucia Sambataro Vincenzo Minissale Salvatore Plumari Vincenzo Greco |
| author_facet | Maria Lucia Sambataro Vincenzo Minissale Salvatore Plumari Vincenzo Greco |
| author_sort | Maria Lucia Sambataro |
| collection | DOAJ |
| description | In the last decade a Quasi-Particle Model (QPM) has been developed to study charm quark dynamics in ultra-relativistic heavy-ion collisions supplying a satisfactory description of the main observables for D meson and providing an estimate of the space-diffusion coefficient Ds(T) from the phenomenology. In this paper, we extend the approach to bottom quarks describing their propagation in the quark-gluon plasma within an event-by-event full Boltzmann transport approach followed by a coalescence plus fragmentation hadronization. We find that QPM approach is able to correctly predict the first available data on RAA(pT) and v2(pT) of single-electron from B decays without any parameter modification w.r.t. the charm. We show also predictions for centralities where data are not yet available for both v2(pT) and v3(pT). Moreover, we discuss the significant breaking of the expected scaling of the thermalization time τth with MQ/T, discussing the evolution with mass of Ds(T) to better assess the comparison to lQCD calculations. We find that at T=Tc charm quark Ds(T) is about a factor of 2 larger than the asymptotic value for M→∞, while bottom Ds(T) is only a 20% higher. This implies a Ds(T) which is consistent within the current uncertainty to the most recent lattice QCD calculations with dynamical quarks for M→∞. |
| first_indexed | 2024-03-08T05:55:20Z |
| format | Article |
| id | doaj.art-17f35275dcc94059a7036c0fd3a4a9a3 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-03-08T05:55:20Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-17f35275dcc94059a7036c0fd3a4a9a32024-02-05T04:30:48ZengElsevierPhysics Letters B0370-26932024-02-01849138480B meson production in Pb+Pb at 5.02 ATeV at LHC: Estimating the diffusion coefficient in the infinite mass limitMaria Lucia Sambataro0Vincenzo Minissale1Salvatore Plumari2Vincenzo Greco3Department of Physics and Astronomy ‘E. Majorana’, University of Catania, Via S. Sofia 64, 1-95123 Catania, Italy; Laboratori Nazionali del Sud, INFN-LNS, Via S. Sofia 62, I-95123 Catania, Italy; Corresponding author.Department of Physics and Astronomy ‘E. Majorana’, University of Catania, Via S. Sofia 64, 1-95123 Catania, Italy; Laboratori Nazionali del Sud, INFN-LNS, Via S. Sofia 62, I-95123 Catania, ItalyDepartment of Physics and Astronomy ‘E. Majorana’, University of Catania, Via S. Sofia 64, 1-95123 Catania, Italy; Laboratori Nazionali del Sud, INFN-LNS, Via S. Sofia 62, I-95123 Catania, ItalyDepartment of Physics and Astronomy ‘E. Majorana’, University of Catania, Via S. Sofia 64, 1-95123 Catania, Italy; Laboratori Nazionali del Sud, INFN-LNS, Via S. Sofia 62, I-95123 Catania, ItalyIn the last decade a Quasi-Particle Model (QPM) has been developed to study charm quark dynamics in ultra-relativistic heavy-ion collisions supplying a satisfactory description of the main observables for D meson and providing an estimate of the space-diffusion coefficient Ds(T) from the phenomenology. In this paper, we extend the approach to bottom quarks describing their propagation in the quark-gluon plasma within an event-by-event full Boltzmann transport approach followed by a coalescence plus fragmentation hadronization. We find that QPM approach is able to correctly predict the first available data on RAA(pT) and v2(pT) of single-electron from B decays without any parameter modification w.r.t. the charm. We show also predictions for centralities where data are not yet available for both v2(pT) and v3(pT). Moreover, we discuss the significant breaking of the expected scaling of the thermalization time τth with MQ/T, discussing the evolution with mass of Ds(T) to better assess the comparison to lQCD calculations. We find that at T=Tc charm quark Ds(T) is about a factor of 2 larger than the asymptotic value for M→∞, while bottom Ds(T) is only a 20% higher. This implies a Ds(T) which is consistent within the current uncertainty to the most recent lattice QCD calculations with dynamical quarks for M→∞.http://www.sciencedirect.com/science/article/pii/S0370269324000388Relativistic heavy-ion collisionsQuark-gluon plasmaHeavy quark transportHeavy flavour hadronization |
| spellingShingle | Maria Lucia Sambataro Vincenzo Minissale Salvatore Plumari Vincenzo Greco B meson production in Pb+Pb at 5.02 ATeV at LHC: Estimating the diffusion coefficient in the infinite mass limit Physics Letters B Relativistic heavy-ion collisions Quark-gluon plasma Heavy quark transport Heavy flavour hadronization |
| title | B meson production in Pb+Pb at 5.02 ATeV at LHC: Estimating the diffusion coefficient in the infinite mass limit |
| title_full | B meson production in Pb+Pb at 5.02 ATeV at LHC: Estimating the diffusion coefficient in the infinite mass limit |
| title_fullStr | B meson production in Pb+Pb at 5.02 ATeV at LHC: Estimating the diffusion coefficient in the infinite mass limit |
| title_full_unstemmed | B meson production in Pb+Pb at 5.02 ATeV at LHC: Estimating the diffusion coefficient in the infinite mass limit |
| title_short | B meson production in Pb+Pb at 5.02 ATeV at LHC: Estimating the diffusion coefficient in the infinite mass limit |
| title_sort | b meson production in pb pb at 5 02 atev at lhc estimating the diffusion coefficient in the infinite mass limit |
| topic | Relativistic heavy-ion collisions Quark-gluon plasma Heavy quark transport Heavy flavour hadronization |
| url | http://www.sciencedirect.com/science/article/pii/S0370269324000388 |
| work_keys_str_mv | AT marialuciasambataro bmesonproductioninpbpbat502atevatlhcestimatingthediffusioncoefficientintheinfinitemasslimit AT vincenzominissale bmesonproductioninpbpbat502atevatlhcestimatingthediffusioncoefficientintheinfinitemasslimit AT salvatoreplumari bmesonproductioninpbpbat502atevatlhcestimatingthediffusioncoefficientintheinfinitemasslimit AT vincenzogreco bmesonproductioninpbpbat502atevatlhcestimatingthediffusioncoefficientintheinfinitemasslimit |